因此，我試圖建立聊天和文本編輯你寫消息的地方。我想根據(jù)文本量更改高度。要知道的一件好事也是，這是在一個片段中。就像在信使或普通的消息傳遞應(yīng)用程序中一樣。Kotlin：fun initTextWatcher(){ var tw: TextWatcher = object : TextWatcher { override fun onTextChanged(s: CharSequence, start: Int, before: Int, count: Int) { val textview = viewOfLayout.chat_input_text if (activity != null) { activity?.runOnUiThread { textview.height = 100 } } } override fun afterTextChanged(s: Editable) {} override fun beforeTextChanged(s: CharSequence, start: Int, count: Int, after: Int) {} } viewOfLayout.chat_input_text.addTextChangedListener(tw) }XML： <android.support.constraint.ConstraintLayout android:layout_width="0dp" android:layout_height="wrap_content" android:background="@color/White" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintStart_toStartOf="parent" app:layout_constraintBottom_toBottomOf="parent" android:id="@+id/chat_input_text_Send_container"> <Button android:text="@string/Send" android:layout_width="wrap_content" android:layout_height="35dp" android:id="@+id/chat_send_button" app:layout_constraintEnd_toEndOf="parent" android:layout_marginEnd="10dp" android:layout_marginBottom="10dp" app:layout_constraintBottom_toBottomOf="parent" android:background="@drawable/chat_round_corners" android:textColor="@color/White" android:textSize="15sp"/>
1 回答
慕尼黑8549860
TA貢獻1818條經(jīng)驗 獲得超11個贊
我通過在每次文本更改為的參數(shù)時設(shè)置布局參數(shù)來修復(fù)它。editText
fun initTextWatcher(){
var tw: TextWatcher = object : TextWatcher {
override fun onTextChanged(s: CharSequence, start: Int, before: Int, count: Int) {
val chat_textedit = viewOfLayout.chat_input_text
if (activity != null) {
activity?.runOnUiThread {
val lparams = chat_textedit.layoutParams as ConstraintLayout.LayoutParams
chat_textedit.layoutParams = lparams
}
}
}
override fun afterTextChanged(s: Editable) {}
override fun beforeTextChanged(s: CharSequence, start: Int, count: Int, after: Int) {}
}
viewOfLayout.chat_input_text.addTextChangedListener(tw)
}
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